Libriheavy: a 50,000 hours ASR corpus with punctuation casing and context

Libriheavy is a labeled version of Librilight. Please refer to our repository k2-fsa/libriheavy for more details. We also have a paper: Libriheavy: a 50,000 hours ASR corpus with punctuation casing and context, Preprint available on arxiv.

See RESULTS for the results for icefall recipes.